Solange Reportedly Fought With Rachel Roy at the Met Gala Too

She was drunk and belligerent, sources say.

Jay Z may not have been the only person Solange Knowles fought with at the Met Gala. Us Weekly reports that Beyoncé's sister first got in a verbal disagreement with designer Rachel Roy at The Standard Hotel.

No cause for the argument with Roy has been revealed, but the two have history: They attended the Met Gala together in 2012, and Roy's ex-husband and Jay Z were former friends and business partners before a bad fallout.

Alcohol was likely a culprit, according to Page Six: "Solange had too much to drink and was out of it by the time the performances started after the dinner at the Met Ball," their source said. She was also described as "belligerent" and "like a pressure cooker waiting to explode." The source also told Page Six that when a female guest in Roy's group asked Solange what her problem was, Beyoncé stuck up for her sister, telling the woman, "You don't get to speak to my sister that way."